CSS ?? ??? ?? ???
??: nav-index ??? ??? ?? ?? ??("? ??")? ?????.
??: ??nav-index: auto|number|inherit
??: auto ?????? ??? ?? ?? ??? ??? ?????. ??? ??? ?? ? ?? ??? ?????. 1? ? ??? ?????. ??? nav-index ??? ?? ?? ???? ????? ?? ?????.
Note: ?? Opera??? nav-index ??? ?????.
CSS ?? ??? ?? ?
<!DOCTYPE html>
<html>
<head>
<style>
button
{
position:absolute;
}
button#b1
{
top:20%;left:25%;
nav-index:1;
nav-right:#b2; nav-left:#b4;
nav-down:#b2; nav-up:#b4;
}
button#b2
{
top:40%;left:50%;
nav-index:2;
nav-right:#b3; nav-left:#b1;
nav-down:#b3; nav-up:#b1;
}
button#b3
{
top:70%;left:25%;
nav-index:3;
nav-right:#b4; nav-left:#b2;
nav-down:#b4; nav-up:#b2;
}
button#b4
{
top:40%;left:0%;
nav-index:4;
nav-right:#b1; nav-left:#b3;
nav-down:#b1; nav-up:#b3;
}
</style>
</head>
<body>
<button id="b1">Button 1</button>
<button id="b2">Button 2</button>
<button id="b3">Button 3</button>
<button id="b4">Button 4</button>
<p><b>注釋：</b>目前只有 Opera 支持 nav-* 屬性。當(dāng)您使用方向鍵導(dǎo)航時(shí)，請(qǐng)同時(shí)按下 Shift 鍵。</p>
</body>
</html>???? ?? ?
??? ????? ??? "???? ??" ??? ?????